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Zoom out: Correctly scale canvas in non-iframe editor #71351

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Zoom out: Correctly scale canvas in non-iframe editor #71351

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9e563f8
Zoom out: Correctly scale canvas in non-iframe editor
t-hamano Aug 26, 2025
0dbaf38
Update trigger logic
t-hamano Aug 27, 2025
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10 changes: 7 additions & 3 deletions packages/block-editor/src/components/iframe/use-scale-canvas.js
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Original file line number Diff line number Diff line change
Expand Up @@ -316,12 +316,16 @@ export function useScaleCanvas( {
* changes due to the container resizing.
*/
useEffect( () => {
const trigger =
iframeDocument && previousIsZoomedOut.current !== isZoomedOut;
// If we don't have an iframe document, we don't run or track the animation.
if ( ! iframeDocument ) {
return;
}

const triggerAnimation = isZoomedOut !== previousIsZoomedOut.current;
previousIsZoomedOut.current = isZoomedOut;
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@jeryj jeryj Aug 26, 2025

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This is testing well for me. I think I'd prefer to keep the previous previousIsZoomedOut.current !== isZoomedOut alongside the setting of the ref though. I think it will be easier to understand why we don't want the animation to run when the iframeDocument is false. What do you think of this instead?

// If we don't have an iframe document, we don't run or track the animation.
if ( ! iframeDocument ) {
	return;
}

const triggerAnimation = isZoomedOut !== previousIsZoomedOut.current;
previousIsZoomedOut.current = isZoomedOut;

// Zoom state has not changed, so we don't need to run the animation.
if ( ! triggerAnimation ) {
	return;
}

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@t-hamano t-hamano Aug 27, 2025

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Updated in 0dbaf38

The suggested logic seems to work correctly!


if ( ! trigger ) {
// Zoom state has not changed, so we don't need to run the animation.
if ( ! triggerAnimation ) {
return;
}

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